Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / tools / perl-5.8.0 / lib / 5.8.0 / Net / FTP / A.pm

## $Id: //depot/libnet/Net/FTP/A.pm#16 $
## Package to read/write on ASCII data connections
##

package Net::FTP::A;
use strict;
use vars qw(@ISA $buf $VERSION);
use Carp;

require Net::FTP::dataconn;

@ISA = qw(Net::FTP::dataconn);
$VERSION = "1.15";

sub read {
 my    $data    = shift;
 local *buf     = \$_[0]; shift;
 my    $size    = shift || croak 'read($buf,$size,[$offset])';
 my    $timeout = @_ ? shift : $data->timeout;

 if (length(${*$data}) < $size && !${*$data}{'net_ftp_eof'}) {
   my $blksize = ${*$data}{'net_ftp_blksize'};
   $blksize = $size if $size > $blksize;

   my $l = 0;
   my $n;

   READ:
   {
     my $readbuf = defined(${*$data}{'net_ftp_cr'}) ? "\015" : '';

     $data->can_read($timeout) or
          croak "Timeout";

     if ($n = sysread($data, $readbuf, $blksize, length $readbuf)) {
       ${*$data}{'net_ftp_bytesread'} += $n;
       ${*$data}{'net_ftp_cr'} = substr($readbuf,-1) eq "\015"
                                       ? chop($readbuf)
                                       : undef;
     }
     else {
       return undef
         unless defined $n;

       ${*$data}{'net_ftp_eof'} = 1;
     }

     $readbuf =~ s/\015\012/\n/sgo;
     ${*$data} .= $readbuf;

     unless (length(${*$data})) {

       redo READ
         if($n > 0);

       $size = length(${*$data})
         if($n == 0);
     }
   }
 }

 $buf = substr(${*$data},0,$size);
 substr(${*$data},0,$size) = '';

 length $buf;
}

sub write {
 my    $data   = shift;
 local *buf    = \$_[0]; shift;
 my    $size   = shift || croak 'write($buf,$size,[$timeout])';
 my    $timeout = @_ ? shift : $data->timeout;

 (my $tmp = substr($buf,0,$size)) =~ s/\n/\015\012/sg;

 # If the remote server has closed the connection we will be signal'd
 # when we write. This can happen if the disk on the remote server fills up

 local $SIG{PIPE} = 'IGNORE' unless $^O eq 'MacOS';

 my $len = length($tmp);
 my $off = 0;
 my $wrote = 0;

 my $blksize = ${*$data}{'net_ftp_blksize'};

 while($len) {
   $data->can_write($timeout) or
        croak "Timeout";

   $off += $wrote;
   $wrote = syswrite($data, substr($tmp,$off), $len > $blksize ? $blksize : $len);
   return undef
     unless defined($wrote);
   $len -= $wrote;
 }

 $size;
}

1;